Consider the best back pocket player in the Ovens-Murray league when he signed with Melbourne before the 1951 season, Lack couldn't obtain a clearance to join the Demons and did not play for 12 months. In his time out of the game he trained independently in Myrtleford under a special regime prepared for the Melbourne Football Club by the soon to be famous trainer Percy Cerutty.

Lack was able to play in a practice match before the 1952 season but was still waiting for a clearance when the season commenced. On the Monday before Round 3 his clearance finally granted and the club sent him a return rail ticket to get him from Myrtleford to the game. Lack cashed in the rail ticket and borrowed his fathers truck for the trip to Melbourne. He then chopped a truck-load of fire wood and departed for Melbourne early on Friday morning. On his way he sold the wood and continued to the city.

He debuted in the back pocket the next day, but during Round 4 Lack suffered an injury that put him out for several weeks. He returned through the Seconds and returned to the side in Round 11, 1952 but was injured again before returning to play out the year in the Seconds. Throughout the year he continued to life in Myrtleford between Sunday and Thursday and train on his own.

A broken collarbone in a 1953 practice match delayed his start to the season and by the time Lack returned he decided to go back to the Ovens & Murray League and continue playing there instead. He remained there for another year before moving to King Island after marrying.

Lack later returned to Melbourne and remained an active member of the Past Players Association into the 1980's.